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Beginning Pre-Calculus for Game Developers by Boris Meltreger, John P. Flynt

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Plotting Secant Values

The value of the secant is undefined when it falls on a vertical line passing through a point on the x axis at which the cosine value is 0. The cosine and secant functions are reciprocals of each other.

When you plot a secant value, if you begin on the x axis at 0, the value of the secant is 1. As you move toward from 0, the value of the secant rises on an asymptotic basis. In other words, it approaches but never reaches it, and its value becomes infinitely large.

After passing , you are in the next phase of the secant. At ...

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